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Lucien Nunes · 3rd May 2021, 10:09 am

Although, if the resistances are 6Ω between any two terminals, that would be unusual for a split-phase switch-start, be it manual or centrifugal. The start winding usually has significantly higher resistance, and the readings would reveal the two windings sharing a common terminal by one reading being the sum of the other two. What the present readings suggest to me is that it is actually a delta winding, intended to run on a single-phase supply with a capacitor permanently in parallel with one coil. I am not sure why they would do that in this application but it will be interesting to further confirm the symmetry of the readings.

3rd May 2021, 10:09 am	#10
Lucien Nunes Rest in Peace Join Date: Apr 2008 Location: London, UK. Posts: 2,508	Re: Keith Blackman motor wiring Although, if the resistances are 6Ω between any two terminals, that would be unusual for a split-phase switch-start, be it manual or centrifugal. The start winding usually has significantly higher resistance, and the readings would reveal the two windings sharing a common terminal by one reading being the sum of the other two. What the present readings suggest to me is that it is actually a delta winding, intended to run on a single-phase supply with a capacitor permanently in parallel with one coil. I am not sure why they would do that in this application but it will be interesting to further confirm the symmetry of the readings.